37
In the example shown in Fig. 72, the PC receives four negative re-
sponses (request timed out).
Fig. 72 — Ping — Negative Responses
If the PC receives four negative responses, check the internet
browser parameters to determine if a proxy server or an automatic
configuration script has been configured. If this is the case:
• Deselect the proxy server or the configuration script and
restart the browser,
• Or refer to the section Java Application Configuration
(page 38).
Try to access the unit again. If the PC still does not receive a re-
sponse from the unit, restart the unit. Contact your system admin-
istrator.
UNIT IS CONNECTED TO THE LOCAL NETWORK
The unit is connected to the local network by an uncrossed cable,
and the unit is energized. Open a Windows command window
(Start, Execute, type cmd and press Enter), then type the com-
mand ping, followed by the unit IP address.
If the responses are positive (see Fig. 71), the internet browser
configuration is faulty. Check the system parameters of the inter-
net browser to determine if a proxy server or an automatic config-
uration script has been configured (Tools
Internet Options
Connections
System Parameters). See Fig. 73.
Fig. 73 — Local Area Network Settings
If a proxy server is used, add the unit IP address to the exceptions
list of the proxy server (advanced proxy configuration). See
Fig. 74.
If a configuration script is used, it is not possible to add the unit IP
address to the exceptions list. In this case, see the section Java Ap-
plication Configuration below.
If the response to the “ping” command is negative, verify the IP
address of the PC and the IP address of the unit. They must have
the system network and sub-system in common. The last part of
the IP address is the host number and must be unique on the sub-
system; for example: Unit address — 172.30.101.11 and PC ad-
dress — 172.30.101.182. In this example, 172.30 corresponds to
the system network, and 101 corresponds to the sub-system. The
host numbers are 11 and 182 respectively.
Fig. 74 — Proxy Settings
ETHERNET CONNECTION ON THE PC
Open the network configuration window of the PC and double-
click Network Connections. Find the system interface board and
check that no red “X” appears on the icon.
The connection to the local network must be authorized and in the
connected status. If this is not the case, check the connections and
authorize/repair the network connection.
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